Alex White, pitching against the Cubs on Friday, was placed on the 60-day disabled list on Saturday after soreness in his arm and drop in velocity on his pitches. ( Smiley N. Pool / Houston Chronicle )

Astros righthander Edgar Gonzalez was called up from Class AAA Oklahoma City.

White said it feels like all his offseason hard work is “going down the drain.” He was penciled in as an early spring-training starter before righthander Brad Peacock won the No. 4 spot.

“It’s tough because I worked really hard this offseason and I made the club. … It’s one of those things where hopefully when I come back I’ll be much healthier and be a lot better pitcher and I’m going to work to make sure that happens,” White said.

White will be re-evaluated Sunday. He’s unsure if his injury will require surgery.

“We’re getting a second opinion. … Hopefully we’ll know for sure by Monday or Tuesday and then have a plan in place to have me back on the field as soon as possible,” White said.